/**
 * L2FProd Common v9.2 License.
 *
 * Copyright 2005 - 2009 L2FProd.com
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package automenta.vivisect.swing.property.util.converter;

import java.util.HashMap;
import java.util.Map;



/**
 * ConverterRegistry. <br>
 * 
 */
public class ConverterRegistry implements Converter {

	private static ConverterRegistry sharedInstance = new ConverterRegistry();

	private Map fromMap;

	public ConverterRegistry() {
		fromMap = new HashMap();

		new BooleanConverter().register(this);
		new AWTConverters().register(this);
		new NumberConverters().register(this);
		new BasicNumberTypeConverters().register(this);
		new FileConverter().register(this);
		new DateConverter().register(this);
	}

	public void addConverter(Class from, Class to, Converter converter) {
		Map toMap = (Map) fromMap.get(from);
		if (toMap == null) {
			toMap = new HashMap();
			fromMap.put(from, toMap);
		}
		toMap.put(to, converter);
	}

	public Converter getConverter(Class from, Class to) {
		Map toMap = (Map) fromMap.get(from);
		if (toMap != null) {
			return (Converter) toMap.get(to);
		} else {
			return null;
		}
	}

	@Override
	public Object convert(Class targetType, Object value) {
		if (value == null) {
			return null;
		}

		Converter converter = getConverter(value.getClass(), targetType);
		if (converter == null) {
			throw new IllegalArgumentException(
			"No converter from " + value.getClass() + " to " + targetType.getName());
		} else {
			return converter.convert(targetType, value);
		}
	}

	public static ConverterRegistry instance() {
		return sharedInstance;
	}

}
